3 years ago

The greatest common factor of 4xy and -6xy

Mathematics

2 answers:

Rashid [163]3 years ago

6 0

Answer:

The greatest common factor is 2x

Juliette [100K]3 years ago

6 0

I think it’s 2xy bc 2xy fits into both of those

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postnew [5]

The surface area is 54 square inches

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3 years ago

Construct a 95% confidence interval for the population mean, μ. Assume the population has a normal distribution. A random sample

GuDViN [60]

Answer: $(628.48,\ 661.52)$

Step-by-step explanation:

Given : Sample size : $n=16$ , which is a small sample (, 30) so we use t-test.

Sample mean : $\overline{x}=645 \text{ hours}$

Standard deviation : $\sigma = 31 \text{ hours}$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $t_{n-1,\alpha/2}=2.131$

The confidence interval for population mean is given by :-

$\overline{x}\pm t_{n-1,\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=645\pm(2.131)\dfrac{31}{\sqrt{16}}\\\\\approx645\pm16.52\\\\=(645-16.52,\ 645+16.52)\\\\=(628.48,\ 661.52)$

Hence, a 95% confidence interval for the population mean $\mu$ = $(628.48,\ 661.52)$

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3 years ago

A rectangle is dilated by a factor of 1/5. The area of the new rectangle is 4 square yards . What could be the dismension of the

katrin [286]

20 square yards is the answer

4 0

4 years ago

For any nonnegative real number.

frutty [35]

Answer:

Step-by-step explanation:

We know that $\sqrt{b}=b^{1/2}$ .

We also know that $(a^b)^c=a^{bc}$ .

We can combine these facts to get $(\sqrt{b})^2=(b^{1/2})^2=b^{1/2*2}=b^{1}=b$ .

So, the answer is $\boxed{A}$ and we're done!

<em>Note: the non-negative part or the equation comes from the fact that you assume the square root of a negative number doesn't exist. You will change this assumption later in the year, or in further years.</em>

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3 years ago

Will give brainly to second person who answers this

Pavel [41]

Heloooeirofiofcjxjxkfkdkfkc

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3 years ago

Read 2 more answers